#!/usr/bin/env node

const log = console.log,
      usr = {
        name:'zhangxingjie',
        age:45,
        qq:'1837478426@qq.com'
      }
log('name:\t%s',usr.name);
log('age:\t%d',usr.age)
log('usr:\t%j',usr);
log('age:\t'+usr.age);
log('age:\t',usr.age);
console.error('err message');

console.table(usr);
